[5]Rotaxane and [5]Pseudorotaxane Based on Cucurbit[6]uril and Anchored to a Meso-tetraphenyl Porphyrin

(a) On molecular machine and motors: Special issue of Account of Chemical Research, 2001, 6, guest-edited by Stoddart, J.F;

(b) J.W. Steed and J.L. Atwood: Supramolecular Chemistry, John Wiley and Sons, Ltd, (2000)

(a) S.A. Nepogodiev and J.F. Stoddart: Chem. Rev. 98, 1959 (1998);

(b) Molecular Catenanes, Rotaxanes, and Knots, ed. J.-P. Sauvage, C.O. Dietrich-Buchecker, Wiely-VCH, Weinheim (1999)

Badjic J.D., Balzani V., Credi A., Silvi S., Stoddart J.F., 2004 Science 303: 1847

(a) W.L. Mock: In F. Vogtle (ed.), Comprehensive Supramolecular Chemistry, Vol. 2, Pergamon, Oxford (1996), 477;

(b) K. Kim: Chem. Soc. Rev. 31, 96 (2002);

(c) J. Lagona, P. Mukhopadhyay, S. Chakrabarti, and L. Isaacs: Angew. Chem. Int. Ed. 44, 4844 (2005)

Tuncel D., Steinke J.H.G., 2004 Macromolecules 37: 288

(a) J.W. Lee, K. Kim, and K. Kim: Chem. Commun. 1042 (2001);

(b) S.I. Jun, J.W. Lee, S. Sakamoto, K. Yamaguchi, and K. Kim: Tetrahedron Lett. 41, 471 (2000)

(a) M.-S. Choi, T. Yamazaki, I. Yamazaki, and T. Aida: Angew. Chem. Int. Ed. 43, 150 (2004);

(b) A.K. Burrell, D.L. Officer, P.G. Plieger, and D.C. Reid: Chem. Rev. 101, 2751 (2001)

(a) L.M. Scolaro, A. Romeo, and R.F. Pasternack: J. Am. Chem. Soc. 126, 7178 (2004);

(b) C.N. Lunardi and A.C. Tedesco: Curr. Org. Chem. 9, 813 (2005)

(a) G. Moschetto, R. Lauceri, F.G. Gulino, D. Sciotto, and R.␣Purrello: J. Am. Chem. Soc. 124, 14536 (2002);

(b) R.G.E. Coumans, J.A.A.W. Elemans, P. Thordarson, R.J.M. Nolte, and E. Rowan: Angew. Chem. Int. Ed. 42, 650 (2003);

(c) K. Kano, R.␣Nishiyabu, T. Yamazaki, and I. Yamazaki: J. Am. Chem. Soc. 125, 10625 (2003);

(d) D. Kuciauskas, P.A. Liddell, S. Lin, T.E. Johnson, S.J. Weghorn, J.S. Lindsey, A.L. Moore, and D. Gust: J.␣Am. Chem. Soc. 121, 8604 (1999);

(e) D.L. Dick, T.V.S. Rao, D. Sukumaran, and D.S. Lawrence: J. Am. Chem. Soc. 114, 2664 (1992);

(f) K. Kano, R. Nishiyabu, T. Asada, and Y. Kuroda: J.␣Am. Chem. Soc. 124, 9937 (2002);

(g) K. Kano, R. Nishiyabu, and R. Doi: J. Org. Chem. 70, 3667 (2005)

Wen L., Li M., Schlenoff J.B., 1997 J. Am. Chem. Soc. 119: 7726

(a) W.L. Mock and N.-Y. Shih: J. Org. Chem. 51, 4440 (1986);

(b) W.L. Mock and N.-Y. Shih: J. Am. Chem. Soc. 110, 4706 (1988);

(c) W.A. Freeman: Acta Crystallgr., Sect. B B40, 382 (1984)

At pH < 4, UV–Vis spectrum reveals one absorption peak due to Soret Band at 432 nm and two absorption bands due to Q band at 593 and 647 nm, whereas at pH > 4 the Soret Band appears at 414 nm along with four bands for the Q band at 515, 553, 588 and 637 nm